Beams not connecting

[Hans Aberg]

When recompiling the Sedi Donka below with LilyPond 2.11.19, the  
beams do not connect (for example, measure 1, submeasure 1, 3, last  
group in both), which did not happen in LilyPond 2.7.3. Apparently,  
LilyPond thinks the beams must start on the 1/8's. The only source  
upgrade changes were
  line-width   -> linewidth
  ragged-right -> raggedright
What is the problem (fixable or bug)? (Sorry, could not convert small  
sample in large PDF-file to small graphics file.)

  Hans Aberg


Source for LilyPond 2.11.19 :
---- SediDonka.ly ----
%{
LilyPond Test
%}

%{
\paper {
  #(define dump-extents #t)

  linewidth = 160\mm - 2.0 * 0.4\in
  raggedright = ##t
  indent = 0\mm
}

\layout {

}
%}


\header{
  title = "Sedi Donka (Horo)"
  composer = "Traditional"
}

  barlines = { \repeat unfold 8 {s16*7 \bar ":" s16*7 \bar ":"  
s16*11 | } }

\score {
\new Staff <<
  \barlines
\relative {
  \tempo 4 = 144
  \key e \minor
  \time 25/16
  #(override-auto-beam-setting '(end * * 25 16)  3 16)
  #(override-auto-beam-setting '(end * * 25 16)  7 16)
  #(override-auto-beam-setting '(end * * 25 16) 10 16)
  #(override-auto-beam-setting '(end * * 25 16) 14 16)
  #(override-auto-beam-setting '(end * * 25 16) 18 16)
  #(override-auto-beam-setting '(end * * 25 16) 21 16)
  \repeat volta 2 {
    g'16( fis g)  a8\prall a16( d,)   g16( fis g)  a8\prall a16( d,)
      fis16( g a b)  c( b d)  c8\prall c16( b) |
    g16( fis g)  a8\prall a16( d,)   g16( fis g)  a8\prall a16( d,)
      c'16( a) b( g)   a8\prall( d16)  a8 a |
  }
  \repeat volta 2 {
    g16( a b)  c( g) d'( g,)   c8\prall( g16)  b( g) c( g)
      b16( g) (b g)  a8.  \acciaccatura  c d4 |
    g,16( a b)  c( g) d'( g,)   c8\prall( g16)  b( g) c( g)
      b16( a) b( g)  a8\prall( d16)  a8 a |
  }
  \repeat volta 2 {
    a16( b) b  b8 b   a16( b) b  b8 b
      a16( g fis g)  a( b e,)  b'4 |
    a16( b) b  b8 b   a16( b) b  b8 b
      a16( g fis g)  e8.  e4 |
  }
  \repeat volta 2 {
    d16( e fis)  g8 g   g16( fis e)  fis8 fis
      d8 d  \acciaccatura g a8.  a4 |
    d,16( e fis)  g8 g   g16( fis e)  fis8 fis
      d8 e  e8.  e4 |
  }
}
%{
\chords {
  b4:7 b8.:7  b4:7 b8.:7  b4:7 b8.:7  b4:7 b8.:7
  a4:7 b8.:7  a4:7 b8.:7  b4:7 b8.:7  b4:7 b8.:7 }
%}
>>



}

\version "2.7.2"  % necessary for upgrading to future LilyPond versions.

----